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/*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* EXYNOS PPMU header
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __DEVFREQ_EXYNOS_PPMU_H
#define __DEVFREQ_EXYNOS_PPMU_H __FILE__
#include <linux/ktime.h>
/* For PPMU Control */
#define PPMU_ENABLE BIT(0)
#define PPMU_DISABLE 0x0
#define PPMU_CYCLE_RESET BIT(1)
#define PPMU_COUNTER_RESET BIT(2)
#define PPMU_ENABLE_COUNT0 BIT(0)
#define PPMU_ENABLE_COUNT1 BIT(1)
#define PPMU_ENABLE_COUNT2 BIT(2)
#define PPMU_ENABLE_COUNT3 BIT(3)
#define PPMU_ENABLE_CYCLE BIT(31)
#define PPMU_CNTENS 0x10
#define PPMU_FLAG 0x50
#define PPMU_CCNT_OVERFLOW BIT(31)
#define PPMU_CCNT 0x100
#define PPMU_PMCNT0 0x110
#define PPMU_PMCNT_OFFSET 0x10
#define PMCNT_OFFSET(x) (PPMU_PMCNT0 + (PPMU_PMCNT_OFFSET * x))
#define PPMU_BEVT0SEL 0x1000
#define PPMU_BEVTSEL_OFFSET 0x100
#define PPMU_BEVTSEL(x) (PPMU_BEVT0SEL + (ch * PPMU_BEVTSEL_OFFSET))
/* For Event Selection */
#define RD_DATA_COUNT 0x5
#define WR_DATA_COUNT 0x6
#define RDWR_DATA_COUNT 0x7
enum ppmu_counter {
PPMU_PMNCNT0,
PPMU_PMCCNT1,
PPMU_PMNCNT2,
PPMU_PMNCNT3,
PPMU_PMNCNT_MAX,
};
struct bus_opp_table {
unsigned int idx;
unsigned long clk;
unsigned long volt;
};
struct exynos_ppmu {
void __iomem *hw_base;
unsigned int ccnt;
unsigned int event[PPMU_PMNCNT_MAX];
unsigned int count[PPMU_PMNCNT_MAX];
unsigned long long ns;
ktime_t reset_time;
bool ccnt_overflow;
bool count_overflow[PPMU_PMNCNT_MAX];
};
struct busfreq_ppmu_data {
struct exynos_ppmu *ppmu;
int ppmu_end;
};
void exynos_ppmu_reset(void __iomem *ppmu_base);
void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
unsigned int evt);
void exynos_ppmu_start(void __iomem *ppmu_base);
void exynos_ppmu_stop(void __iomem *ppmu_base);
unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch);
void busfreq_mon_reset(struct busfreq_ppmu_data *ppmu_data);
void exynos_read_ppmu(struct busfreq_ppmu_data *ppmu_data);
int exynos_get_busier_ppmu(struct busfreq_ppmu_data *ppmu_data);
#endif /* __DEVFREQ_EXYNOS_PPMU_H */
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